Conductive, organic coatings with low layer thickness and good plasticity

US7919181B2 · kind B2 · utility

Assignee

• Henkel AG & Co. KGaA · DE

Inventors

• Eva Wilke · Hilden, DE
• Manuela Göske-Krajnc · Hilden, DE
• Reiner Wark · Wuppertal, DE
• Guadalupe Sanchis Otero · Goldkronach, DE
• Stephan Müller · Monheim, DE
• Marcel Roth · Goldkronach, DE
• Wolfgang Lorenz · Dormagen, DE
• Karsten Hackbarth · Goldkronach, DE
• Andreas Kunz · Remscheid, DE

Key dates

• Filing date: Jul 1, 2009
• Grant date: Apr 5, 2011
• Expiry date: Oct 8, 2029

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/2927
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The invention relates to a metal sheet, or a component made of a metallic material, comprising a layer system on the surface with at least the following layers: a) a conversion layer, comprising no more than 1 mg chromium per m2, b) a layer of a cross-linked organic polymer system with a thickness in the range of 0.5 to 2.5 μm, comprising, in relation to the total mass of said layer, 2 to 25 wt. % of an electrically conductive pigment having a specific weight of 3 g/cm3 maximum, however no more than 5 wt. % of the electrically conductive pigment having a specific weight of more than 3 g/m3. A coating material and a coating method for the production of the layer b).